Mold-making machine.



No. 990,919. PATENTED JUNE 16, 1909.

H. M. MOLDER.

MOLD MAKING MACHINE.

APPLICATION FILED AUG. 26, 1907.

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No. 890,919. PATENTED JUNE 16, 1908.

H. M. MOLDBR'.

MOLD MAKING MACHINE.

APPLICATION FILED AUG. 26, 1907.

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HENRY M. MOLDER, OF BEDFORD, OHIO.

MOLD-MAKING MACHINE.

Specification of Letters Patent.

,1 an AMMJQ) is) Patented June 16, 1908.

Application filed August 26, 1907. Serial No. 390,226.

To all whom it may concern:

Be it known that I, HENRY M. MoLDnR, a citizen of the United States of America, residing at Bedford, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Mold-Making Machines; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to improvements in mold-making machines, and pertains more especially to improvements in what is known in the art as a rock-over mold-making machine.

The primary object of this invention is to make molds with facility by a machine of the character indicated without liability of injuring the mold during the separation of the mold and pattern.

Another object is to swing the connected mold and pattern into a horizontal position onto laterally spaced upwardly projecting depressible pins or members and to hold the latter normally in position to be depressed during the said movement of the mold by the moldbottom against the action of means acting to retain the said depressible members in their upper and normal position so as to accommodate any unevenness or irregularities in the under side of the mold-bottom, and then to lock the said depressible members in their depressed position preparatory to the sepa ration of the mold and pattern.

Another object is to lower the mold vertically from the pattern and thereby permit the mold to be removed from the aforesaid depressible members when the latter have been depressed by the mold-bottom and locked in their depressed position.

With these objects in view, and to the end of realizing other advantages hereinafter appearing, this invention consists in certain features of construction, and combinations of parts, hereinafter described, pointed out in the claims, and illustrated in the accompanying drawings.

In the said drawings, Figure 1 is a side elevation of a mold-making machine embodying my invention, and in this figure the patternplate-holder is shown in its mold-receiving position, and the said plate, pattern and mold are shown in section. Fig. 2 is a side elevation of the machine, but inthis figure the pattern-plate holder is shown in its molddelivering position, and the mold, patternplate and pattern are shown in section. Fig. 3 is a vertical section on line 3-3, Fig. 1, looking in the direction indicated by the arrow. Fig. 4 is a side elevation, partly in section, showing the patternplateholder in its mold-delivering position and illustrating the lowering or separation of the mold from the pattern of the pattern-plate. Fig. 5 is a sec tion on line 55, Fig. 2, looking in the direction indicated by the arrow. Fig. 6 is a vertical section on line 66, Fig. 4, looking in the direction indicated by the arrow, but Fig. 6 is drawn on a larger scale.

My improved mold-making machine comrises a pattern-plate-holder formed by a frame A which is pivotally supported at one end and arranged to swing in a vertical plane. Preferably the frame A is journaled at the said end on an axle B which is arranged horizontally and extends between and is supported from two laterally spaced standards 12 which are integral or rigid with and form a portion of the relatively station ary framework of the machine. The frame A and any mold formed upon and attached to the frame are ca able therefore of being swung in a vertical ane over the axle B. The frame A is provided with a patternbearing plate D, hereinafter referred to as the patternlate, which is arranged horizontally in its mo d-receiving position at one side of the axle, and in the said position of the patternlate the frame A rests upon a standard 13 with which the framework 10 is provided, as shown in Fig. 1, and (1 represents the pattern which is removably secured by screws d to the pattern-plate.

The mold is formed on the pattern-plate while the latter is in its mold-receiving position as shown in Fig. 1. The mold comrises a flask f and a mold-bottom e. The Easkf is mounted on the pattern-plate when the latter is in its mold-receiving position and then rammed with loam g whereupon the mold-bottom e is mounted on the flask as shown in Fig. 1. Means for detachably securing the mold tothe pattern-plate are pro vided and may comprise, for mstance, two rods it. Each rod h is provided at one end with a loop h loosely embracing the axle B and extending from the axle at one side of the mold across the outer side of the mold bottom and adown the opposite side of the mold and terminating at its free end in a member 7L2 overlapping the under side of the a" 1 W l l frame A, and a wedge I driven between the latter and the said member if of the rod tightens the mold upon the pattern-plate. The rods 72. have enough play upon the axle B to render them capable, u on the removal of the wedges I, to be shove laterally from the mold.

As already indicated, the frame A and attached pattern-plate and mold are arranged at one side of the axis of the said frame in the mold-receiving position of the pattern-plate, and suitably applied spiral springs m are attached at one end to the frame A at the opposite side of the said axis and at their other end to the framework 10 and operate to facilitate the swinging of the frame A and attached mold over the axle and into the molddelivering position of the pattern-plate, in which position the pattern-plate and attached mold are arranged horizontally at the last-mentioned side of the axis of the said frame, and the standards 12 of the framework 10 are rovided with lugs 14 which are arranged to f drm stops for limiting the movement of the said frame in actuating the latter to bring the pattern-plate into its mold-delivering position.

The mold-bottom e during the actuation of the mold-laden pattern-plate into its molddelivering position comes into contact with the upper ends of several laterally spaced vertica ly arranged depressible ins or.members J which extend through an have lateral bearing in a horizontally arran ed head K and extend into and have latera bearing in correspondingly arranged boxes L which depend from and are attached to and consequently connected together by the said head.

Each box L is provided in its lower end with a chamber Zinto which extends the pin J which has lateral bearing in the said box, which pin is provided at its lower end with a head J which in the upper and normal position of the pin abuts against or engages the top wall of the said chamber, and the said wall and the said head J cooperate in preventin upward displacement of the pin, and

. a spira s ring 8 is confined within the said chamber etween the said head J and the bottom of the chamber and acts to retain the pin in its upper and normal position.

Each box is provided in one side thereof with a slot L which is loosely occu ied by a clamping member 0 adapted to c amp the pin within the box to the box, and the said ox is provided with a manually operated cam P which is pivotally supported, as at P, from the box and arranged to enga 'e the said clamping member and actuate the atter into its pin-clamping or operative osition, as

shown in Fig. 6, but normally t e said cam and clamping member are in their inopera tive position as shown in Figs. 1 and 3.

The head K is rigid with two depending stems or members K which are spaced laterally and areembraced by correspondingly arranged tubular guides 15 formed on the framework 10 in any approved manner, and the members K rest at their lower ends upon the working peripheral surfaces of cams 1" which are operatively mounted upon a shaft R which is arranged horizontally and supported from the said framework and provided at one end with a lever R for turning the shaft.

The 0 eration of my improved mold-making mac ine is as follows :The mold, as already indicated, is formed while the patternplate is in its mold-receiving position, and when the mold has been made and removably attached to the pattern-plate, as shown in Fig. 1, the frame A is swung over the axle B (as shown in Fig. 2) into position resting upon the lugs 14 of the standards 12. The pins or depressible members J project normally far enough above the head K to cause them to be depressed by the mold-bottom during the actuation of the pattern-plate into its mold-delivering position so that when the frame A rests upon the lugs 14 all of the pins or depressible members J shall have een lowered against the action of the springs 8, thereby accommodating any imperfections, irre ularities or unevenness in the outer side of t e mold-bottom so that the latter, when the said depressible members are locked in their depressed position, can not rock or vibrate. The dotted line 16 in Fig. 1 indicates the extent of depression of the pins or members J by the mold-bottom. The pins or de ressible members J as soon as they have been owered against the action of the springs s by the mold-bottom are locked in their depressed position by rendering the clamping members 0 operative, whereupon the rods or mold-attaching devices it are rendered inoperative by removing the wedges I and withdrawing the said devices laterally from the mold and frame A (as shown in Fig. 4) whereupon the cam-shaft R is turned to permit the head K and attached boxes L to lower by gravity.

- What I claim is 1. In a mold-making machine, laterally spaced depressible members arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; means arranged under the said depressible members and acting to retain the said de ressible members in their upper and norma position, and means for locking the said depressible members in their depresssed position.

2. In a mold-making machine, laterally spaced depressible members arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; springs arranged un der the said depressible members and acting to retain the latter in their upper and normal position; supports for the springs, which supports are adapted to be lowered, and means for locking the said depressible members in their depressed position.

3. In a mold-making machine, laterally spaced depressible members arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; boxes affording lat eral bearing to the said depressible members and arranged a suitable distance below the upper ends of the depressible members; means'acting to retain the said depressible members in their upper and normal position; a head supporting the said boxes and adapted to be lowered, and means for locking the said depressible members in their depressed posi tion.

4. In a mold-making machine, laterally spaced depressible members arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; boxes affording lateral bearing to the said depressible members and arranged a suitable distance below the upper ends of the depressible members; springs confined within the said boxes and under the said depressible members and act ing to retain the latter in their upper and normal position, and'means for locking the said depressible members in their depressed position.

5. In a mold-making machine, laterally spaced depressible members arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; boxes affording lateral bearing to the said depressible members and arranged a suitable distance below the upper ends of the depressible members; spiral springs confined within the boxes under the said depressible members and acting to retain the latter in their upper and normal position; a head bearing the said boxes and arranged a suitable distance below the upper ends of the depressible members, which head is adapted to be lowered, and means for locking the depressible members in their depressed position.

6. In a mold-making machine, laterally spaced vertical pins arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; means acting to retain the pins in their upper and normal position, and means for locking the pins in their depressed position.

7. In a mold-making machine, laterally spaced upright pins arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed, which pins are provided at their lower ends with heads; boxes aflording lateral bearing to the pins and arranged a suitable distance below the upper ends of the pins, which boxes are provided with chambers whose top walls are engaged by the aforesaid heads in the highest position of the pins; springs confined within the said chambers below the said heads and acting to retain the pins in their upper and normal position, and means for locking the said pins in their depressed position.

8. In a mold-making machine, a suitably guided head normally arranged to be lowered and provided with several laterally spaced depending boxes; depressible members having lateral bearing in the boxes and projecting above the head and normally arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the material with which the flask of the mold is rammed; means acting to retain the depressible members in their normal position, and means for locking the depressible members in their depressed position.

9. In a mold-making machine, a horizon tally arranged cam-shaft having two corresponding cams spaced longitudinally of the shaft; a head adapted to be lowered and provided with suitably guided depending members resting on and operatively engaged by the cams, which head is provided with several laterally spaced depending boxes; depressible members having lateral bearing in the boxes and projecting above the head and normally arranged to be depressed by the mold-bottom during the placing of a mold in position preparatory to freeing the mold from a pattern embedded in the top of the mate rial with which the flask of the mold is rammed; means acting to retain the depressible members in their normal position, and means for locking the depressible members in their depressed position.

10. A mold-making machine comprising a pattern-plate-holder pivotally supported and arranged to swing in a vertical plane; a pattern-plate secured to the holder and arranged to have the pattern face upwardly or downwardly according as the holder is swung into its mold-receiving or mold-delivering position; means arranged to support the holder and the mold formed down-side upon and attached to the pattern-plate in the mold-receiying position of the plate; means arranged to support the holder in the molddelivering position of the plate; laterally spaced depressible members arranged to be depressed-by the 1nold-bottom during the actuation of the aforesaid holder into its mold-delivering position; means acting to retain the said depressible members in their upper and normal position, and means for locking the said depressible members in their depressed position.

11. A mold-making machine comprising a frame pivotally supported and arranged to swing in a Vertical plane; a pattern-bearing plate secured to the frame and arranged to have the pattern face upwardly or down- Wardly according as the plate is swung into its mold-receiving or mold-delivering position; means arranged to support the frame and the mold formed down-side upon and attached to the plate in the flask-receiving position of the plate means arranged to support the frame in position to hold the plate horizontally in the mold-delivering position of the plate; laterally spaced depressible members arrangedto be depressed by the mold-bottom during the actuation of the plate into its mold delivering position; means acting to retain the said depressible members in their upper and normal position; and means for locking the said depressible members in their depressed position.

In testimony whereof, I sign the foregoing specification, in the presence of two Witnesses.

HENRY M. MO'LDER.

Witnesses:

C. H. DoREn, VIoToR C. LYNoH. 

